GB676410A - Method of heating and forging metal bars, and an eddy current furnace for heating the bars - Google Patents

Method of heating and forging metal bars, and an eddy current furnace for heating the bars

Info

Publication number
GB676410A
GB676410A GB30501/50A GB3050150A GB676410A GB 676410 A GB676410 A GB 676410A GB 30501/50 A GB30501/50 A GB 30501/50A GB 3050150 A GB3050150 A GB 3050150A GB 676410 A GB676410 A GB 676410A
Authority
GB
United Kingdom
Prior art keywords
heating
bar
bars
forging
forging temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB30501/50A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB676410A publication Critical patent/GB676410A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J17/00—Forge furnaces
    • B21J17/02—Forge furnaces electrically heated

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

676,410. Induction heating. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Dec. 14, 1950 [Dec. 21, 1949], No. 30501/50. Drawings to Specification. Class 39(iii) A method of heating and forging metal bars consists in heating the end of the bar to a temperature considerably below forging temperature in an eddy current furnace, then shifting the bar therein to heat its end to forging temperature in one or more steps and an adjacent part to a temperature considerably below forging temperature, then cutting off the bar end and heating the said adjacent part to forging temperature. In one embodiment the total bar length is made twice the forged portion length and initially one half of the bar is heated to below forging temperature. The complete bar is then inserted into the furnace and the said half brought to forging temperature. This half is then forged and cut off leaving the remaining half to be further heated. A furnace may include a number of grooves for the reception of a series of bars and means for their automatic rejection, the number of grooves being dependent upon the relation between total heating time and the number of heating steps. Sequences of heating and forging operations with bars having lengths either two or three times the length of each forged part are described.
GB30501/50A 1949-12-21 1950-12-14 Method of heating and forging metal bars, and an eddy current furnace for heating the bars Expired GB676410A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE676410X 1949-12-21
SE2666830X 1949-12-21

Publications (1)

Publication Number Publication Date
GB676410A true GB676410A (en) 1952-07-23

Family

ID=26656313

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30501/50A Expired GB676410A (en) 1949-12-21 1950-12-14 Method of heating and forging metal bars, and an eddy current furnace for heating the bars

Country Status (2)

Country Link
US (1) US2666830A (en)
GB (1) GB676410A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856514A (en) * 1954-12-24 1958-10-14 Deutsche Edelstahlwerke Ag Method of and apparatus for the electrical resistance heating of semi-finished metalproducts for the purpose of their immediate subsequent hot deformation
US2841692A (en) * 1954-12-27 1958-07-01 Deutsche Edelstahlwerke Ag Method of and an apparatus for the electrical resistance heating of semi-finished metllic articles
US2901583A (en) * 1956-08-17 1959-08-25 Holo Krome Screw Corp Forging apparatus and stock warming means therefor
US4075450A (en) * 1976-02-23 1978-02-21 American Induction Heating Corporation Induction heater for forging bar stock
JPS5317509A (en) * 1976-08-03 1978-02-17 Nippon Kokan Kk <Nkk> Method and apparatus for induction heating of metallic material
US4362578A (en) * 1980-10-16 1982-12-07 Teledyne Industries, Inc. Method of hot working metal with induction reheating
EP0159029A3 (en) * 1984-04-20 1987-05-06 Park-Ohio Industries, Inc. Method of and apparatus for heating magnetizable metal work pieces

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682112A (en) * 1928-08-28 Heating bab
US1697811A (en) * 1929-01-01 Appabattys fob
US1646498A (en) * 1925-12-29 1927-10-25 Gen Electric Electric heating
US1693370A (en) * 1927-05-11 1928-11-27 Westinghouse Electric & Mfg Co Furnace
US2102417A (en) * 1935-04-12 1937-12-14 Bethlehem Steel Corp Apparatus for manufacturing bolts and similar articles
US2141163A (en) * 1936-06-18 1938-12-27 Braun Matthaus Method of and furnace for coating pipes with metal
US2236177A (en) * 1936-12-21 1941-03-25 Baash Ross Tool Co Control valve for wells
US2473245A (en) * 1945-05-26 1949-06-14 Hanna Merrill Oliver Forging or upsetting of metal rods or bars using electric resistance heating
US2493785A (en) * 1947-10-11 1950-01-10 Ohio Crankshaft Co Article heating and delivery apparatus
US2507817A (en) * 1947-12-09 1950-05-16 Ropp Irwin Method and apparatus for heating and forging elongated metal blanks

Also Published As

Publication number Publication date
US2666830A (en) 1954-01-19

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